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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GTK_INPUT_METHOD_CONTEXT_IMPL_GTK_H_
#define UI_GTK_INPUT_METHOD_CONTEXT_IMPL_GTK_H_
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "ui/base/glib/glib_integers.h"
#include "ui/base/glib/scoped_gsignal.h"
#include "ui/base/ime/linux/linux_input_method_context.h"
#include "ui/gfx/geometry/rect.h"
using GdkWindow = struct _GdkWindow;
using GtkIMContext = struct _GtkIMContext;
using GtkWidget = struct _GtkWidget;
namespace gtk {
// An implementation of LinuxInputMethodContext which uses GtkIMContext
// (gtk-immodule) as a bridge from/to underlying IMEs.
class InputMethodContextImplGtk : public ui::LinuxInputMethodContext {
public:
explicit InputMethodContextImplGtk(
ui::LinuxInputMethodContextDelegate* delegate);
InputMethodContextImplGtk(const InputMethodContextImplGtk&) = delete;
InputMethodContextImplGtk& operator=(const InputMethodContextImplGtk&) =
delete;
~InputMethodContextImplGtk() override;
// Overridden from ui::LinuxInputMethodContext
bool DispatchKeyEvent(const ui::KeyEvent& key_event) override;
bool IsPeekKeyEvent(const ui::KeyEvent& key_event) override;
void SetCursorLocation(const gfx::Rect& rect) override;
void Reset() override;
void UpdateFocus(bool has_client,
ui::TextInputType old_type,
const TextInputClientAttributes& new_client_attributes,
ui::TextInputClient::FocusReason reason) override;
void SetSurroundingText(const std::u16string& text,
const gfx::Range& text_range,
const gfx::Range& composition_range,
const gfx::Range& selection_range) override;
ui::VirtualKeyboardController* GetVirtualKeyboardController() override;
private:
// GtkIMContext event handlers. They are shared among |gtk_context_simple_|
// and |gtk_multicontext_|.
void OnCommit(GtkIMContext* context, gchar* text);
void OnPreeditChanged(GtkIMContext* context);
void OnPreeditEnd(GtkIMContext* context);
void OnPreeditStart(GtkIMContext* context);
// Returns the IMContext depending on the currently connected input field
// type.
GtkIMContext* GetIMContext();
// A set of callback functions. Must not be nullptr.
const raw_ptr<ui::LinuxInputMethodContextDelegate> delegate_;
// Tracks the input field type.
ui::TextInputType type_ = ui::TEXT_INPUT_TYPE_NONE;
// IME's input GTK context.
ScopedGObject<GtkIMContext> gtk_context_ = nullptr;
ScopedGObject<GtkIMContext> gtk_simple_context_ = nullptr;
// These correspond to the GtkImContexts above.
raw_ptr<GdkWindow> last_set_client_window_for_gtk_context_ = nullptr;
raw_ptr<GdkWindow> last_set_client_window_for_gtk_simple_comtext_ = nullptr;
// Last known caret bounds relative to the screen coordinates, in DIPs.
// Effective only on non-simple context.
gfx::Rect last_caret_bounds_;
std::vector<ScopedGSignal> signals_;
};
} // namespace gtk
#endif // UI_GTK_INPUT_METHOD_CONTEXT_IMPL_GTK_H_
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